Sonography is commonly known as sonogram, to people. The same thing that applies to ultrasound, applies to sonography. Both fields are concerned with the use of high-frequency sound waves to produce a graphic image. Sonographic technology was first developed in WWII to detect the location of objects under water. The applications within the medical field are invaluable. Its not only used in obstetrics to determine the age and health of a fetus, sonography is commonly used to guide procedures like fine-needle biopsies or to detect heart disease. It can also help detect abnormalities in the body.